Loom for weaving looped or pile fabrics.



No. 769,062. PATENTEIJ AUG. '30, 1904.-

J. R. DENNIS & J. H. FAWTHROP.

LOOM FOR WEAVING LOOPED 0R PILB FABRICS.

APPLIOATION FILED MAY 18. 1903. N0 MODEL.

7 2 SHEETS-SHEET 1- No. 769,062. PATENTED AUG. 30, 1904.'

J. R. DENNIS & J. H. FAWTHROPL LOOM FOR WEAVING LOOPED 0R PILE FABRICS.

APPLIOATION FILED MAY 1a. 1903.

no 11011 2 sums-sum 2.

Wilna mes. frwentars W wwmmb @QMM UNITED STATES.

"Patented August 30, 1904.

- JOHN RICHARD DENNIS. AND JAMES HENRY FAWTHROP, OF HALIFAX,

ENGLAND, ASSIGNORS TO JOHN CROSSLEY & SONS LIMITED, OF HALI- FAX,ENGLAND.

Loom FOR WEAVING .LOOPEDOR PILE FABRICS.

SPECIFTGATION forming part of Letters Patent No. 769,062, dated. August30, 1904.

Appiication filed May 18, 1903.

To all whom it may concern.-

improve the mechanism for inserting and withdrawing the wires, the meansfor enabling greater varying lengths of .wire (to suit varying widths offabrics to be woven) I in the same lo'om to be used than has been Ipossible heretofore,and the pickingmechanism ofthe loom, and to dispensewith the ordinary mechanisms, such as scrolls, chain gearing, andpicking-tappets and their connections. To provide for inserting andWithdrawing the wires, we employ an'arrangement of miter or bevelwheelsworking in conjunction with a crank or crank-disk and a slotted lever,the pin of the crank or crankdisk moving in the slot of the lever, whichslot is suitably shaped to produce the desired movement of the slottedlever and of the parts connected thereto and driven thereby according tothe fabric tobe produced. The slotted lever, which is mounted at one endon a shaft or stud, is at the other or free end united by aconnecting-rod to an adjustable block on a toothed quadrant engagingwith a pinion giving motion to a rope-pulley, which in turn gives abackward-and-forward motion to a rope, to which is secured a slide-boxfor inserting and withdrawing the wires. By

this means a great variation in the travel of the slide-box is providedforthat is to say, for example, in a loom eighty-one inches wide fabricsof any desired width from thirtysix to eighty-one inches can beproduced,

while in a loom one hundred and forty-four inches wide fabrics of anydesired width from eighty-one to one hundred and forty-four Serial No.157,714. (No model.)

1 inches can be produced, and in all cases wires stood, .we willdescribe how it can be carried 1 into practice by reference to theaccompanying drawings, in which- Figure 1 is a front elevation of partof a loom. having our improvements applied to it, and Fig. 2 is a planview of the same with the driving-shaft omitted. Fig. 3 is an end viewof part of the wiring motion. 1 Fig. 4 is a section on the line 4 4,Fig. 1. Fig. 5 is a front view of a lever hereinafter described.

Similar letters of reference in all the figures indicate similar parts.

a is part of the framing of the loom; b, the bottom shaft; 0, thecrank-shaft; d, the driving-shaft, having fast and loose pulleys (2 dmounted upon it; e, the sword or rocking shaft, and ff f f gear-wheelsfor communicating motion from the shaftd to the shafts cand b, thewheelsf f being so proportioned that the crank-shaft 0 will make two revoluitions to one of the bottom shaft 6. All the before-mentioned parts areof ordinary construction.

g is the slide-box, which operates the wires to be inserted andwithdrawn during the weaving operations, which slide-box works freelyupon a slide 9, which is supported by an anglebracket 9 and by across-head g on a supplementary framing h. This slide-box is caused f totravel along the slide 9 by means of a rope e', which passes overpulleys e" on the frame a and head 9 and also around a rope-pulley j,mounted in suitable bearings on the frame it and to which an oscillatorymovement to a 1 greater or less extent is imparted in order to cause thecorresponding travel of the slidebox g. Oscillatory movement is impartedto this rope-pulley y from the bottom shaft 5 in .the followingmannerthat is to say,'upon the bottom shaft 6 is mounted a miter-wheelk, which engageswitha second miter wheel 7c,secured to a cross-shaft kworking in bear- .ings on the frame h. Near one end of the cross-shaft76 is fixed a crank-disk or crank Z, the pin Z of which carries anantifrictionroller.

m is our slotted lever, which is mounted on a shaft m, working inbearings on the frame It, (or the said shaft may be secured in thebearings and the lever m rock upon the said shaft,) and in the slot 722of which the pin Z of the crank projects in such a manner that as thesaid crank rotates an oscillatory movement will be imparted to the saidlever. The upper end of this lever m is connected by a rod 10. to atoothed quadrant a, pivoted in the head 9 and engaging with a pinion 47upon the shaft of the rope-pulley j, whereby as the lever m oscillatesoscillation will also be imparted to the quadrant n, and consequently tothe rope-pulley 3'. In order to provide for varying the extent ofoscillation which the quadrant a receives, the point of connectionbetween the rod a and the said quadrant is upon a slide-block 0, whichis adapted to be adjusted in a slot 0 in the said quadrant, so that thesaid point of connection may be moved toward or away from the axis ofoscillation of the said quadrant. Also the upper end of the slottedlever m is provided with a series of holes m or is otherwise suitablyconstructed, so that the point of connection between the said rod 72 andthe said lever may be adjusted toward and away from the pivot of thelatter. It will be obvious that by varying the points of connectionbetween the slotted lever m and the red at or between the latter and thequadrant a the amount of oscillation or rotation imparted to therope-pulley j, and consequently also the amount of movement imparted tothe slide-box can be varied to suit the width of the particular fabricbeing woven.

The slot m in the lever m is so shaped that as the said lever isoperated by the rotation of the crank a varying movement will beimparted to the said lever, and consequently also to the slide-box-thatis to say, slowly at the beginning and finishing of the insertion of thewires and slowly at the beginning and finishing of the Withdrawal of thewires and quickly during the intermediate stages of the two operations.The form of lever shown in Fig. l is the form of lever which we use whenWeaving tapestry or two-shot fabrics, while when we make velvet orthree-shot fabrics the slot in the lever is shaped as shown in Fig. 5.

When making two-shot tapestry or Brussels carpet and like fabrics, thebevel-wheels 7c on the bottom shaft 6 and cross-shaft k are soproportioned that the said two shafts run at uniform speedthat is tosay, that the cross-shaft 70 makes one revolution to two revolutions ofthe crank-shaft.

In order to adapt the loom for weaving three-shot velvet or Wiltoncarpet and like fabrics, it is only necessary to substitute for theequal size bevel-Wheels wheels bearing the proportion of one to one andone-half upon the bottom shaft 71 and cross-shaft Z5, respectively, sothat the cross-shaft shall only make one revolution while thecrank-shaft is making three revolutions. In this case also the slottedlever shown in Fig. l is removed and replaced by the lever shown in Fig.5, the shape of the slot in which is varied to suit the variation in thespeed.

In producing tapestry or two-shot fabrics we employ the ordinarytapestry treadle-box p, (for operating the healds,) which is driven by aspur-wheel p on the crank-shaft (2, Figs. 1 and 2, and spur-wheelfi,which works freely on the bottom shaft 7), the spur-wheel p making onerevolution to the spur-wheel 7) four revolutions. The picking motion isoperated by strikers q q, secured to the disks 1* 1*, coming in contactwith the picking-shafts .y- .s' in the ordinary manner, one strikerbeing employed on each disk.

In producing velvet or three-shot fabrics the method now in use is tochange the spurwheels f f, which are geared at two to one for a pair ofspur-wheels geared at three to one and change the tapestry treadle-boxfora Velvet treadle-box, to which is attached one or morepicking-tappets used with other connections for moving thepicking-shafts s s longitudinally to miss alternately the strikers fixedto the disks 1' 1 of which there are three strikers to each disk. By ourimproved method we do not change the spur-wheels f f but keep thecrank-shaft c and bottom shaft 6 at one relative speed, (two to 011e,)as hereinbefore described; but we employ the ordinary velvet treadle-boxnow in use for operating the healds and which is geared to run at onerevolution to six of the crank-shaft and we dispense with the pickingtappet or tappets and all connections therewith which have hitherto beenused in connection with the velvet treadle-box, and we also employ onlya single striker on each disk, as is described with reference to weavingtwo-shot fabrics.

The picking-shafts a s oscillate in bearings t t and do not movelongitudinally. \V e thereby obtain one uniform picking motion for bothtapestry (two shot) and vcl vet (three shot) fabrics and a quicker,better, and more reliable picking for velvet (three shot) fabrics thanhas hitherto been obtained.

By our improved method of wiring and picking mechanism we dispense withall chains, chain-gearing, scrolls, picking-tappets, and all connectionsheretofore used for the same, thus reducing the labor necessary inchanging the loom to weave different kinds of fabrics, therebysimplifying the construction of the loom and reducing the wearing andfrictional parts and at the same time obtain ing more uniform andreliable wiring and picking motions.

Having now particularly described and ascertained'the natureof our saidinvention and.

in what manner the same is to be performed, we declare that what weclaim is 1. In a loom for weaving looped and piled fabric, thecombination of a wire-box, a rope for imparting motionto the said box, adrum and pulley upon which the rope is mounted, a pinion on the axis ofthe said drum, a toothed quadrant engaging with the said pinion, anoscillating slotted lever receiving its motion from the drivingmechanism of the loom and a rod adjustably connected to thesaid leverand quadrant and communicating motion from one to the other,substantially as'described.

2. In a loom for weaving looped and piled fabrics the combination of aslide-box for inserting and. withdrawing the wires, a guide upon whichthe said slide-box travels, ropeand-pulley mechanism forreciprocatingthe said slide-box upon the guide, a pinion upon the axisof one of the rope-pulleys, atoothed' quadrant engaging with the saidpinion,a slotted lever, a crank, the pm of which engages with the saidslotted lever, a rod for connect-f ing the slotted lever with thequadrant and means for adjusting the point of connection between saidrod and one of the parts to which it is connected, the slot in the saidlever, with which the crank-pin engages, being formed partly in thelongitudinal direction of the lever, and partly at an inclinationthereto,'so that at the beginning and finishing of the insertion andwithdrawal'of the .wires by the slide-box the latter will be movedslowly, and quickly during the intermediate portion of the movement,substantially as, and for the purposes, described. r

3.,In a 100111 for weaving looped or piled fabrics the combination of acrank-shaft, a

bottom shaft, gearing fortransmitting motion 7 from the crank-shaft to.the bottom shaft so that the latter makes one revolution to two of theformer, a cross-shaft at right angles to the bottom shaft, bevel-gearingfor transmitting motion from the bottom shaft to the said cross-shaft sothat the latter will make one revolution to two of the crank-shaft fortwoshot fabrics or one revolution to three of the the cross-shaft, atright angles to the'bottomf shaft, engages, a slide-boxfor inserting andwithdrawing the wires, a rope, pulleys over whichthe said rope runs, apinion upon the.

axis of one of the said rope-pulleys, a toothed quadrant engaging withthe said pinion, a slotted lever, acrank engaging with the slot in thesame lever and a rod adju'stably connected with the quadrant and withthe'slotted lever,

substantially as described.

4:. In a loom for weaving looped and piled" fabrics and'wherein theslide-box is traversed by means of a rope running over pulleys, thecombination with one of the said pulleys, of

a pinion mounted upon the axis of the said pulley, a quadrant engagingwith the said pinion and a lever and rod for transmitting motion to thequadrant, the said quadrant being slotted so as to permit the point atwhich the .rod is connected to the quadrantto be moved toward or awayfrom the axis of the lutions to one of the former, a slide-box forsaidquadrant, substantially as, and for the inserting and withdrawing thewires and .mechanism for varying the traverse of the.

said' slide-box, and comprising a rope, pulleys upon which the said roperuns, a pinion mounted upon one of the said pulleys, a quadrant engagingwith the said pinion and a lever.

and connecting-rod for transmitting motion to the said quadrant, of atreadle-box mounted loosely upon the bottom shaft and having agear-wheel engaging with a gear-wheel fixed on the crank-shaft, twodisks on the bottom shaft each provided with a single striker the saidtwo strikers being arranged diametrically opposite to one another andtwo pickingshafts adapted to be alternately operated by the strikers'thegearing between the treadle-box on the bottom shaft and the crank-shaftbeing so proportioned that'when weaving twoshotfabrics the treadle-boxmakes one revo-. lution to four of the crank-shaft and for threeshotfabrics one revolution to six of the crankshaft, substantially asdescribed;

. JOHN RICHARD DENNIS.

JAMES HENRY .FAWTHROP.-'

